{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xb11138b219cf510d75735ccd8909a12727f4b470e3c09bbc244d82f86ab880a8",
    "signature": "0xba991a51cae6f41bdb8abb2d45364e581a5720de418e2915209c31bc41cb91f1011384bb3967b3ccc97ff4852dacd491595a8b1e2d593f2c781f2de2ccb521e91c",
    "signer": "0x5b2F3F58c9c7f7A4C88db0bD454A1920416Ff15d",
    "userId": "51387"
  }
}