{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "453531208",
    "entityType": "User",
    "nonce": "0xdd49ba7f018a89c8f87538929b197b2e3859a1f91e979af75f857e1a6ab4fd47",
    "signature": "0x6fb43decefa2772474b20cc5cd594942cc8354a508a0f212f469d76863d20e8d5234cbd081ccfd2a394ba27e6e13e54856e0b3db24c795f26668b856d8f3efae1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}