{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1967",
    "entityType": "User",
    "nonce": "0x51ee5a1646d67576032b659d76e4419729ca0425183cb7a11cf931445db96bea",
    "signature": "0x3fb56c9cda1b5c598c4d03bb54467311fcd0b4efa2e407bcac22064c722735c862e59b095cc3ca34c75c5edd412142ccd2113361c525bd7b93f0906acfa07bee1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}