{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0x69f0136844bf5149bba394eb540c85a69ba6908719a03aef6b0f6b6e140a191a",
    "signature": "0x4fd800c1b1d3526b5815267cedad2699c4577a49201b3580cf0fa0813e67b524683c4d06db3b6362c9486683213f9beb449f1098f721cf6c8ab219da1ee1f2781b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}