{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "631",
    "entityType": "User",
    "nonce": "0x2dc8dca20950415e13f422448cfd06839cae6b6039f47838357c66ed6e42af91",
    "signature": "0xb1616b41603e056c9072d267ddb756c0b2777c13aa3eea9b3013d6c8d4cc574e37d5f1959b49cbc67870b068f89bdf693da052316dad3f8d295dfd8924190d181c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}