{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "401245662",
    "entityType": "User",
    "nonce": "0xa3455be5fe2c7737acff845aee7173d74d9f0b7eb9c58134205c6597a642dec9",
    "signature": "0x80443179a728d87118f8b47e0233252975e4e173417c34f5527a6945f3d831ec2908b56b38e491804625945b77dc02852e3e4d1e71cae8e6f6997a41aa8951091b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}