{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "763473",
    "entityType": "User",
    "nonce": "0x3fb68f90b2255cc347b56867388b3968841e3f543c0c3426a23669f5d83abb62",
    "signature": "0xf895cb2e86b5a8f8102e5016c4d751ba092e80f953f855f0fdb467cee8f093df7a5da0ef60314cf9f63d93159d291c7a18cf72c970bbd48d42307b347ba1e7161b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}