{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "898121894",
    "entityType": "User",
    "nonce": "0xcf6b7b589981cee636d1c88f169787c6936296fdf61c2b1aa6efa2fe109aba76",
    "signature": "0x51a8773a0bd3cdfbd66ae835ff4c8a921bb6781392fad382c595db7aba78100434a4f8e3cca45e214895c4ec3a4ef88f4a2a73ab142e048f51668242fc3c59c01b",
    "signer": "0xa16E21B675BCaB501e407E716d506F7a99896406",
    "userId": "613617474"
  }
}