{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342495",
    "entityType": "User",
    "nonce": "0xf3b9a75e453653d69c9b339a1e4569bb785e7d80588575d9f7aab2a925995fea",
    "signature": "0x19a2cee2fa0a8808585fe2abab5b8dd9b184a083f36055b529acdaf84f25f25e0ab3a5c17e7a3ce891fc71b7970c9ffacf748b1d879209c061a13a376cd65c9f1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}