{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xad6ab0000d1c2ea4f8ad7826288f39e36d55f7e83a63a13037b478777fba4846",
    "signature": "0xf02252ecdd1824765ea18aa7a7aac711d275683e25de2e86d376a3b2e9d9199a0e6ca790645b80332ae060249f8be6cc8d4b3f449427364d9212cd26a538710c1b",
    "signer": "0x1fdb8b8d658C971e3AA77c0438DE87276B080c05",
    "userId": "821421961"
  }
}