{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6aad6869e6e47d223c55bae3e04b64c9d890f208c9bb1de4f9520f8561ae843c",
    "signature": "0x7373040bd746338856575280b5cc5e531ec3dce597705f6c1009b5a248b812651740d94362e67a3064884e4d46ed1a38105430f86e35df81b8a4c3873ba168081c",
    "signer": "0x9ea7D00a55C424a79C6eAf6d9b16Fd8c498A0548",
    "userId": "775036578"
  }
}