{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51497",
    "entityType": "User",
    "nonce": "0xe9bbf18969a1fa7c2fe9e3cf09377c6fd5255c3d53f44a22ecd30b488f15d3c9",
    "signature": "0xd7975783eca616259c2e1fc9020655fc809983d686df4d266af0f08a372d28872140bb7c32e12c54f67bb5d94bf0974a628e7888d80c4abf95e2025b8e346ce61b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}