{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73d0290ff940941075808be8b3b2d6359da2321ffef9b159972545909fe25d0d",
    "signature": "0x6793c266a1f96366092f6bb439df0f5f12c799937736afdd1570ff71973b3c07239d2f28db9a8f41f092d4409252e963e47b484ef2fc620442b25e999f3fb4981c",
    "signer": "0x65fec925B45Eedd889b013849758c86FfEB36cF2",
    "userId": "582613534"
  }
}