{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "31290",
    "entityType": "User",
    "nonce": "0x42a56a51d461c20f00690b1749333786f304bda0d985677b4b9aea29dd6cb02e",
    "signature": "0xe7a3a858ecbe19ed7b22b5d5177210699f0480163c7bc3ff691def7b52d32f9e26371bbe3f37740441ebc59f4892187a9cb292c6d9149f5bccf6bb5fa0f8e62c1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}