{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe6d18e6199cea9a6dd5e5d7bf71132790956368ce3459486fcd750f541f2235e",
    "signature": "0xba82195f5e9aac1478e08de4759578684d7fd9e77b6852872b144b0514132b9f118626fb2290cb5fdf6e8f196a2d4d1515ed3f43e5565aae1a8cde3c7b4653661b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}