{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778463",
    "entityType": "User",
    "nonce": "0x1bc640dd9a1a29d5af83d8bde334a1d5372b84ae63eba7c23498fadc3ede1ca2",
    "signature": "0x6553684a367e8d26a935e5143d3c50a8b77938611e6ea3e1b86bc4f90713aeff706e09cd8df44e4564494074dfcae81e8a9a1369d84046d22d02843d129e320a1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}