{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121885",
    "entityType": "User",
    "nonce": "0x8fb7610f263daf989b604e00658e3b36f14e77b15882917844f127f242b2359b",
    "signature": "0x4a8d7b5dae3a27fed03b7a1cce699c371838b01007fb875551d8c92dc08ba3681b9d0fbca73dcb58d79573f507d783e88e879196c752703f3efb7c9edc4cbcc71c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}