{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219883",
    "entityType": "User",
    "nonce": "0xc9fb8245140e891d37a867887ec5d0de562c3cc992010f4058fe3eb859c74537",
    "signature": "0x5a2977b75c01ea4dd4bc242ebd06ac3c0fd1e5cc53aada44df7f224ae1f5c1e03743609b9cd4a6098e42ae3ca1aa31c5055914b1a76d6e0b2bfd5dfe1a86e7661c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}