{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5642",
    "entityType": "User",
    "nonce": "0x7f5e3b2f6e7eb8b334fa9d9f24bee87076bf6c8755bcb0b16be78f98b0761c74",
    "signature": "0x001614da108a15141670fb8186cc536f4e50224f4013168bd9880403faefd6bc421bd4dbd569c7745725d888365dea1611ddb41e4d9162fabc1860fe5dd6d5601b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}