{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0x38986ad407c90c198c0f29292bd8ed2f477b75306acfa458bb9ef8751dfd60e4",
    "signature": "0xd89560a7bc04891ced1cee12d57215eb6008f82506ed3748e2d29aeea4d5c5a42c23574b0d77e53432be8a66d111c2bc82b97cb220137cb8f41e073ecc8c5b771c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}