{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "902715183",
    "entityType": "User",
    "nonce": "0x1de877696726a025d46c6c3fcd2cca4080c151491290f035334ce5b3c59d679f",
    "signature": "0xa8b0c0d59b6044baed2868ceef3c5d5c1db0b20e30159025a65d8d500b63042c1422ebf55f7225ba995725dd4c2864e55cffb19a6a7b7819adf48ad6a16b998d1b",
    "signer": "0xA5594f75935B53086a8f3231b314C131605FEDA6",
    "userId": "140185425"
  }
}