{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "762208",
    "entityType": "User",
    "nonce": "0x4b74695317c743662cb34ed07a7ee33f28e0d9aa37f9294fdd18ba5312104c57",
    "signature": "0xc58c455b10eaf567e0f927d9801829aa57365f02d3aa7a9516ea3477778946b53391e982316261c2ae43fea2e06ccfd1cfa2396e49cf57668c166c175eacaf621b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}