{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x345c42a02dadbed6d61084f491b5f9e1e02d7e6bf6e39e26ca7194b762d98780",
    "signature": "0x1bc03d08fa4c0d66d6a28a4434f3e9aa8db267742824e326d70373569a5e945605c6e7f4953fd2160f4dbb2757775c4480f1f0145f9fba424de42ca5ac8ec29b1b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}