{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881108",
    "entityType": "User",
    "nonce": "0xdde5c89c825ab2998a2e4cd81cbc49fbd413c31e2ee8dad0abc0caa8fbec9039",
    "signature": "0x0e79cc269488b4c4b9427692b1777130802f2d1a1e300b12c422634966240ee10a9c26de4659de8e8aad128ef6055176d6626fcf39f40de7ed5db051deab88e51b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}