{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319704",
    "entityType": "User",
    "nonce": "0x37d519553a33cbcf40342937cfda91b7163235818b39dd4564c803f6258ce2d8",
    "signature": "0x910b411e7f692afa02f17250a1f7d22e1fe8b13ab7ab96b442b21aef4b2306ca57656a9ce02ff53bbe6319974b9ab20f0f86dbbf9448cc0eb783da26046f79841c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}