{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3e64db524e6c48d1c4c93fca4f6ef5d34be8ad5000d9c96fef9e25de947d31f",
    "signature": "0xba4c8322dfe9d0c22608ed7217dd16039b99e3d212179320fc293e36d616572d7d673f2ddb4e13676c82d8a2b19dbe39f44a559a939ce6bbbbdb24d3432ae5c11c",
    "signer": "0xdA4a90FB60d0D99ED3Eaeb8b2c26bBC1F5A3b981",
    "userId": "481107997"
  }
}