{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "332438",
    "entityType": "User",
    "nonce": "0x08af7afa04e7a9984489747676d02e00084bd77acad3dfa87f1c82f3e121ea8c",
    "signature": "0x148a63725f2a50766989b32f568f3dbab0383e85c8a86ef0067ac1c5d632b6a00a7f90e0ebee7d4625276d40cc968fe6c7485e40136457c09e9e4d65a793d4761c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}