{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154583694",
    "entityType": "User",
    "nonce": "0xbe0bd2306438158dbe22f4211141948edef8a330b2bf9a870ad400f2914b94f5",
    "signature": "0x7f6c9bcbf59983f265bd23e374dbe8e3fc179521802cc396f9acf0abd9859db74e0053b328d96a7a5eb42ba5eecf0b481a5563882e1a2e9def8288dd1ef5ad401c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}