{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x7b9a4f885f12f3896a57eeb3ad61973f388362a267fbe582e0a28b376054672e",
    "signature": "0x8b7515da52b0100954f66412879ab3954383c7d5d802aa9db92612e1af722eb24b614b25e63d34eefe8ac17c602624f96b8cc631b2fe8560d37d9ca7aa3eb6391b",
    "signer": "0x8ca2E56acF4f2515d8BA92e79e45Dfaeb7E6Be98",
    "userId": "217982730"
  }
}