{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943956503",
    "entityType": "User",
    "nonce": "0x2182e10e30c902370b0a837b1275fdd8c8de2217637d69e6fb009eb52669643c",
    "signature": "0x52d249a828974e5de257ad2c6cee7b63f73a309379a2932c70321bc014cecb4500141a80fee111709c4f4f293ca6933968f1096369e1595d2f82fdca3adc66b01b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}