{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0x67eb7f697018c1235f2f03333c21d86a2d18e721e580378c54fd76c4d2620749",
    "signature": "0xf0a2355f9d8c9e59a3b57277772b619cd2a6ce562ea8580e864ca6ea370439c2234d61418ae0d5cdd062cac418e136884fc4f4dc330058fb40035888cc14580b1b",
    "signer": "0xD421e37d15105099410eABCBa242D0Ab3E985ab4",
    "userId": "807549804"
  }
}