{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573321843",
    "entityType": "User",
    "nonce": "0xebcf6c467557b3dc5753986d4ff155ffb57e2752365eeae046979db82ab2a2bc",
    "signature": "0xfa5a6c1dd555b951228404176875bc69564b75d813785d117ced498f10133d0770254a749405b67ee90fdcc21efbce80695c7976785829af1085d929a600a1431c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}